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ANIMATED DRAWINGS EXPLAIN PRINCIPLES INVOLVED IN OPERATION OF ELECTRIC IRON, FLUORESCENT LIGHTING, REFRIGERATOR. PRINCIPLES OF THERMOSTAT, MAINTENANCE OF ELECTRIC MOTORS ILLUSTRATED IN CONNECTION W/VACUUM CLEANER. CONTAINS GOOD STOCK SHOTS.


Danger Lurks IRONS REFRIGERATORS VACUUM CLEANERS FLUORESCENT LIGHTING 1940S HOME APPLIANCES THERMOSTATS ANIMATION NOVELTY WIPES TOASTERS STORES DISPLAYS ELECTRICITY LABOR SAVING DEVICES MODERNITY DESIGN LIGHTS LAMPS MOTORS REPAIR SERVICE MAINTENANCE CURRENT FLOW CLEANING HOUSEWORK WOMEN SEX ROLES LABOR
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